11/11/2026
4 min read
When people first start investing, the sheer number of available options can feel overwhelming. There are different markets, asset classes, sectors and investment themes to choose from. Faced with so much choice, many investors look for a simple starting point. This is where Core ETFs often come into the conversation.
Core ETFs can be commonly used as the foundation of a portfolio because they can provide broad market exposure through a single investment. Rather than focusing on a specific sector, theme or niche market, they are designed to give investors exposure to wider parts of the market.
In this article, we'll explain what Core ETFs are, how they are used within a portfolio, and how they fit into a Core-Satellite investment approach.
Capital at risk. The value of investments and the income from them can fall as well as rise and are not guaranteed. Investors may not get back the amount originally invested.
A Core ETF is a broad, diversified investment that aims to track a wide equity or bond market.
Importantly, "Core" is not necessarily a completely separate type of ETF. Instead, it commonly describes the role an ETF can play within a portfolio.
Many investors use Core ETFs as the foundation of their portfolio because they provide exposure to a large number of companies or securities through a single investment.
Examples of markets often associated with Core ETFs include:
Broad global equity markets
Broad regional equity markets
Broad global bond markets
Broad regional bond markets
Rather than focusing on a single theme or industry, Core ETFs are generally designed to offer wide market exposure.
Although Core ETFs can track different markets, they are commonly associated with several characteristics.
Core ETFs are commonly designed to provide exposure to broad areas of equity or bond markets.
Rather than focusing on a specific theme, sector or niche area of the market, they are generally used to gain wider market exposure through a relatively small number of investments.
Examples include:
MSCI World Index
MSCI All Country World Index (ACWI)
FTSE All-World Index
S&P 500 Index
FTSE 100 Index
STOXX Europe 600 Index
These indices represent large segments of global or regional markets rather than specific sectors.
Because Core ETFs may hold many underlying securities, investors can gain exposure to numerous companies or bonds through a single investment.
This broad market exposure is one reason Core ETFs are commonly used as portfolio building blocks. However, diversification does not eliminate investment risk, and the value of investments can still rise and fall.
Core ETFs are commonly used as building blocks within portfolios.
Many investors use them as a foundation to gain broad market exposure and may choose to add other, more targeted investments around that core depending on their objectives and preferences.
Core ETFs can provide exposure to different parts of financial markets.
One portfolio construction approach frequently discussed by investors is the Core-Satellite strategy.
In this framework:
Core | Satellite |
|---|---|
Broad market exposure | More targeted exposures |
Foundation of portfolio | Complementary investments |
Diversified approach | Narrower focus |
Long-term building block | Additional opportunities |
Satellite investments may include areas such as:
Thematic ETFs
Specific sectors
Emerging markets
Themes
The key idea is that these investments may complement a Core ETF rather than replace it.
Many investors first establish a diversified core before considering more targeted exposures.
Although Core ETFs are commonly associated with diversification and broad market exposure, they still involve risk.
Key points Investors should remember include that:
Investment values can rise and fall
Market fluctuations can affect performance
Losses are possible
Returns are not guaranteed
Diversification does not eliminate market risk
Even broadly diversified investments remain exposed to underlying market movements.
As a result, investors should consider whether any investment aligns with their objectives, investment horizon and ability to tolerate market fluctuations.
Capital at risk. The value of investments and the income from them can fall as well as rise and are not guaranteed. Investors may not get back the amount originally invested. Diversification may not fully protect against market risk.
Core ETFs are commonly used as the foundation of a portfolio because they provide broad market exposure through a single investment.
Key points to remember:
✓ Core ETFs are broad, diversified investments
✓ They commonly track broad equity or bond markets
✓ They are often used as portfolio building blocks
✓ Investors may combine them with more targeted satellite investments
✓ Diversification can help spread risk but cannot eliminate it
✓ Core ETFs remain subject to market movements and potential losses
For many investors, building a broad foundation first is a straightforward way to approach portfolio construction before considering more specialised investments.
